Multilocus phylogeny of the parasitic wasps in the tribe Euphorini (Hymenoptera: Braconidae) with revised generic classifications
BackgroundParasitic wasps in the family Braconidae are important regulators of insect pests, particularly in forest and agroecosystems. Within Braconidae, wasps in the tribe Euphorini (Euphorinae) attack economically damaging plant bugs (Miridae) that are major pests of field and vegetable crops. However, the evolutionary relationships of this tribe have been historically problematic. Most generic concepts have been based on ambiguous morphological characters which often leads to misidentification, complicating their use in biological control.MethodsUsing a combination of three genes (COI,28S, andCAD) and 80 taxa collected worldwide, we conducted Bayesian inference using MrBayes, and maximum likelihood analyses using RAxML and IQ-Tree on individual gene trees as well as the concatenated dataset.ResultsThe monophyly of the tribe Euphorini and the two generaPeristenusandLeiophronwere confirmed using maximum likelihood and Bayesian inference. The subgeneric classifications ofLeiophron sensu latowere not supported, and the monotypic genusMamawas also not supported.DiscussionEuphoriella,Euphoriana,Euphorus, andMamasyn. n,have been synonymized underLeiophron. Mama mariaesyn. nwas placed as a junior synonym ofLeiophron reclinator. The generic concepts ofPeristenusandLeiophronwere refined to reflect the updated phylogeny. Further we discuss the need for revising Euphorini given the number of undescribed species within the tribe.